
/*

CUSTOM FORM ELEMENTS

Created by Ryan Fait
www.ryanfait.com

The only things you may need to change in this file are the following
variables: checkboxHeight, radioHeight and selectWidth (lines 24, 25, 26)

The numbers you set for checkboxHeight and radioHeight should be one quarter
of the total height of the image want to use for checkboxes and radio
buttons. Both images should contain the four stages of both inputs stacked
on top of each other in this order: unchecked, unchecked-clicked, checked,
checked-clicked.

You may need to adjust your images a bit if there is a slight vertical
movement during the different stages of the button activation.

The value of selectWidth should be the width of your select list image.

Visit http://ryanfait.com/ for more information.

*/

var checkboxHeight = "25";
var radioHeight = "25";
var selectWidth = "170";
var selectWidth = "179";


/* No need to change anything after this */


document.write('<style type="text/css">input.styled { display: none; } select.styled { position: relative; width: ' + selectWidth + 'px; opacity: 0; filter: alpha(opacity=0); z-index: 5; } .disabled { opacity: 0.5; filter: alpha(opacity=50); }</style>');

var Custom = {
    init: function () {
        var inputs = document.getElementsByTagName("input"), span = Array(), textnode, option, active;
        for (a = 0; a < inputs.length; a++) {
            if ((inputs[a].type == "checkbox" || inputs[a].type == "radio") && inputs[a].className.indexOf("styled") > -1) {
                span[a] = document.createElement("span");
                span[a].className = inputs[a].type;

                if (inputs[a].checked == true) {
                    if (inputs[a].type == "checkbox") {
                        position = "0 -" + (checkboxHeight * 2) + "px";
                        span[a].style.backgroundPosition = position;
                    } else {
                        position = "0 -" + (radioHeight * 2) + "px";
                        span[a].style.backgroundPosition = position;
                    }
                }
                inputs[a].parentNode.insertBefore(span[a], inputs[a]);
                inputs[a].onchange = Custom.clear;
                if (!inputs[a].getAttribute("disabled")) {
                    span[a].onmousedown = Custom.pushed;
                    span[a].onmouseup = Custom.check;
                } else {
                    span[a].className = span[a].className += " disabled";
                }
            }
        }
        inputs = document.getElementsByTagName("select");
        for (a = 0; a < inputs.length; a++) {
            if (inputs[a].className.indexOf("styled") > -1) {

                if (document.getElementById("select" + inputs[a].name) != null) {
                    var foundSelection;
                    option = inputs[a].getElementsByTagName("option");
                    foundSelection = false;
                    for (d = 0; d < option.length; d++) {
                        if (option[d].selected == true) {
                            foundSelection = true;
                            if (option[d].childNodes.length > 0) {
                                if (document.getElementById("select" + inputs[a].name).childNodes.length > 0) {
                                    document.getElementById("select" + inputs[a].name).childNodes[0].nodeValue = option[d].childNodes[0].nodeValue;
                                }
                                else {
                                    document.getElementById("select" + inputs[a].name).innerText = option[d].childNodes[0].nodeValue;
                                }
                            }
                            else {
                                document.getElementById("select" + inputs[a].name).innerText = "";
                            }
                        }
                    }
                    if (inputs[a].style.display == "none") {
                        document.getElementById("select" + inputs[a].name).innerText = "";
                    }
                    if (!foundSelection && inputs[a].selectedIndex > -1 && inputs[a].options.length > 0) {
                        if (option[inputs[a].selectedIndex].childNodes.length > 0) {
                            if (document.getElementById("select" + inputs[a].name).childNodes.length > 0) {
                                document.getElementById("select" + inputs[a].name).childNodes[0].nodeValue = inputs[a].value;
                            }
                            else {
                                document.getElementById("select" + inputs[a].name).innerText = inputs[a].value;
                            }
                        }
                        else {
                            document.getElementById("select" + inputs[a].name).innerText = "";
                        }
                    }
                    continue;
                }

                option = inputs[a].getElementsByTagName("option");
                if (option.length > 0) {
                    if (option[0].childNodes.length > 0) {
                        active = option[0].childNodes[0].nodeValue;
                    }
                    else {
                        active = "";
                    }
                    textnode = document.createTextNode(active);
                    for (b = 0; b < option.length; b++) {
                        if (option[b].selected == true) {
                            if (option[b].childNodes.length > 0) {
                                textnode = document.createTextNode(option[b].childNodes[0].nodeValue);
                            }
                            else {
                                textnode = "";
                            }
                        }
                    }

                    span[a] = document.createElement("span");
                    span[a].className = "select";
                    span[a].id = "select" + inputs[a].name;
                    if (textnode != "") {
                        span[a].appendChild(textnode);
                    }
                    inputs[a].parentNode.insertBefore(span[a], inputs[a]);
                    if (!inputs[a].getAttribute("disabled")) {
                        inputs[a].onchange = Custom.choose;
                    } else {
                        inputs[a].previousSibling.className = inputs[a].previousSibling.className += " disabled";
                    }
                }
            }
        }
        document.onmouseup = Custom.clear;
    },
    pushed: function () {
        element = this.nextSibling;
        if (element.checked == true && element.type == "checkbox") {
            this.style.backgroundPosition = "0 -" + checkboxHeight * 3 + "px";
        } else if (element.checked == true && element.type == "radio") {
            this.style.backgroundPosition = "0 -" + radioHeight * 3 + "px";
        } else if (element.checked != true && element.type == "checkbox") {
            this.style.backgroundPosition = "0 -" + checkboxHeight + "px";
        } else {
            this.style.backgroundPosition = "0 -" + radioHeight + "px";
        }
    },
    check: function () {
        element = this.nextSibling;
        if (element.checked == true && element.type == "checkbox") {
            this.style.backgroundPosition = "0 0";
            element.checked = false;
        } else {
            if (element.type == "checkbox") {
                this.style.backgroundPosition = "0 -" + checkboxHeight * 2 + "px";
            } else {
                this.style.backgroundPosition = "0 -" + radioHeight * 2 + "px";
                group = this.nextSibling.name;
                inputs = document.getElementsByTagName("input");
                for (a = 0; a < inputs.length; a++) {
                    if (inputs[a].name == group && inputs[a] != this.nextSibling) {
                        inputs[a].previousSibling.style.backgroundPosition = "0 0";
                    }
                }
            }
            element.checked = true;
        }
    },
    clear: function () {
        inputs = document.getElementsByTagName("input");
        for (var b = 0; b < inputs.length; b++) {
            if (inputs[b].type == "checkbox" && inputs[b].checked == true && inputs[b].className.indexOf("styled") > -1) {
                inputs[b].previousSibling.style.backgroundPosition = "0 -" + checkboxHeight * 2 + "px";
            } else if (inputs[b].type == "checkbox" && inputs[b].className.indexOf("styled") > -1) {
                inputs[b].previousSibling.style.backgroundPosition = "0 0";
            } else if (inputs[b].type == "radio" && inputs[b].checked == true && inputs[b].className.indexOf("styled") > -1) {
                inputs[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight * 2 + "px";
            } else if (inputs[b].type == "radio" && inputs[b].className.indexOf("styled") > -1) {
                inputs[b].previousSibling.style.backgroundPosition = "0 0";
            }
        }
    },
    choose: function () {
        option = this.getElementsByTagName("option");
        for (d = 0; d < option.length; d++) {
            if (option[d].selected == true) {
                if (option[d].childNodes.length > 0) {
                    if (document.getElementById("select" + this.name).childNodes.length > 0) {
                        document.getElementById("select" + this.name).childNodes[0].nodeValue = option[d].childNodes[0].nodeValue;
                    }
                    else {
                        document.getElementById("select" + this.name).innerText = option[d].childNodes[0].nodeValue;
                    }
                }
                else {
                    document.getElementById("select" + this.name).innerText = "";
                }
            }
        }
    }
}
window.onload = Custom.init;
